:root{--bg: #f6f5f2;--surface: #ffffff;--ink: #1c1b19;--muted: #6b6a66;--placeholder: #9a988f;--line: #e4e2dd;--line-soft: #eeece7;--border: #d6d3cc;--accent: #2f7d4f;--accent-mid: rgba(47, 125, 79, .55);--accent-soft: rgba(47, 125, 79, .12);--danger: #a23b2a;--ring: #c9c6be;--ring-strong: #8b887f;--divider: #b8b5ae;--node-stroke: #b8b5ae;--edge: #b8b5ae;--edge-arrow: #8b887f;--tint-a: #f2f0ea;--tint-b: #faf9f6;--font: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:14px;line-height:1.4;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;color:inherit}h2,p{margin:0}.app{height:100%;display:grid;grid-template-columns:300px minmax(0,1fr);grid-template-rows:56px minmax(0,1fr);grid-template-areas:"top top" "panel board"}.topbar{grid-area:top;display:flex;align-items:center;justify-content:space-between;padding:0 12px 0 24px;border-bottom:1px solid var(--line);background:var(--surface)}.brand{display:flex;align-items:baseline;gap:12px;min-width:0}.brand__name{font-size:18px;font-weight:600;letter-spacing:.2px}.brand__sub{font-size:14px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar__actions{display:flex;align-items:center;gap:6px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 16px;border:1px solid var(--border);border-radius:8px;background:var(--surface);font-weight:500;cursor:pointer;white-space:nowrap}.btn:hover{border-color:var(--ring-strong)}.btn:disabled{opacity:.55;cursor:default}.btn--primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn--primary:hover{filter:brightness(.94);border-color:var(--accent)}.btn--grow{flex:1}.btn--active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.iconbtn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:0;border-radius:8px;background:transparent;cursor:pointer;flex-shrink:0}.iconbtn:hover{background:var(--line-soft)}.iconbtn:disabled{color:var(--border);cursor:default;background:transparent}.iconbtn--accent{border:1px solid var(--accent);background:var(--accent-soft);color:var(--accent)}.iconbtn--accent:disabled{border-color:var(--border);background:transparent;color:var(--border)}.iconbtn--danger{border:1px solid var(--border);color:var(--danger)}.iconbtn--danger:hover{border-color:var(--danger);background:#a23b2a14}.textbtn{height:44px;padding:0 10px;border:0;border-radius:7px;background:transparent;font-weight:500;cursor:pointer}.textbtn:hover{background:var(--line-soft)}.textbtn:disabled{color:var(--placeholder);cursor:default;background:transparent}.textbtn--danger{color:var(--danger)}.vsep{width:1px;height:24px;background:var(--line);margin:0 4px;flex-shrink:0}.input{height:44px;width:100%;min-width:0;padding:0 12px;border:1px solid var(--border);border-radius:8px;background:var(--surface);font:inherit;color:var(--ink)}.input::placeholder{color:var(--placeholder)}.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.input--selected{font-size:15px;font-weight:500;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.row{display:flex;align-items:center;gap:8px}.row--between{justify-content:space-between}.row--end{justify-content:flex-end;margin-top:16px}.panel{grid-area:panel;display:flex;flex-direction:column;min-height:0;overflow-y:auto;border-right:1px solid var(--line);background:var(--surface)}.panel__section{display:flex;flex-direction:column;gap:10px;padding:16px 20px;border-bottom:1px solid var(--line-soft)}.panel__section--legend{gap:0}.panel__section--footer{flex-direction:row;align-items:center;gap:2px;margin-top:auto;border-bottom:0;padding:8px 12px}.eyebrow{font-size:12px;font-weight:500;color:var(--muted);letter-spacing:.4px;text-transform:uppercase}.hint{font-size:13px;color:var(--muted)}.hint--empty{font-style:italic}.deps{display:flex;flex-direction:column;gap:6px}.chips{display:flex;flex-wrap:wrap;gap:6px;min-height:24px;align-items:center}.chip{display:inline-flex;align-items:center;height:36px;padding-left:4px;border:1px solid var(--border);border-radius:18px;background:var(--tint-b);font-size:13px}.chip__name{height:34px;padding:0 4px 0 8px;border:0;background:transparent;cursor:pointer;border-radius:17px}.chip__name:hover{color:var(--accent)}.chip__x{display:inline-flex;align-items:center;justify-content:center;width:32px;height:34px;border:0;background:transparent;color:var(--muted);cursor:pointer;border-radius:17px}.chip__x:hover{color:var(--danger)}.sheet-handle{display:none}.legendtoggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:0;border:0;background:transparent;cursor:default;text-align:left}.legendtoggle__chev{display:none;color:var(--muted)}.legend{display:flex;flex-direction:column;gap:6px;margin-top:10px;font-size:13px;line-height:1.4}.legend strong{font-weight:600}.boardwrap{grid-area:board;position:relative;display:flex;align-items:center;justify-content:center;padding:0;min-width:0;min-height:0;background:var(--surface)}.board{display:block;width:100%;height:100%;background:var(--surface);touch-action:none;user-select:none;-webkit-user-select:none;cursor:grab}.board--dragging{cursor:grabbing}.board--connecting{cursor:crosshair}.board text{font-family:var(--font);pointer-events:none}.board .node{cursor:pointer}.board .halo{paint-order:stroke;stroke:var(--surface);stroke-width:6px;stroke-linejoin:round}.boardtools{position:absolute;left:14px;bottom:14px;display:flex;align-items:center;gap:2px;padding:4px;background:var(--surface);border:1px solid var(--border);border-radius:10px;box-shadow:0 4px 16px #1c1b1914}.zoomlabel{font-size:13px;color:var(--muted);min-width:44px;text-align:center}.toggle{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 12px;border:0;border-radius:7px;background:transparent;font-size:13px;font-weight:500;cursor:pointer}.toggle__track{position:relative;width:30px;height:18px;border-radius:9px;background:var(--border);transition:background .15s}.toggle__knob{position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:7px;background:#fff;transition:left .15s}.toggle--on .toggle__track{background:var(--accent)}.toggle--on .toggle__knob{left:14px}.banner{position:absolute;top:14px;left:14px;display:flex;align-items:center;gap:8px;padding:4px 4px 4px 16px;background:var(--ink);color:#fff;border-radius:10px;font-size:14px;box-shadow:0 4px 16px #1c1b192e;max-width:calc(100% - 32px)}.banner .textbtn{color:#fff}.banner .textbtn:hover{background:#ffffff1f}.toast{position:absolute;top:14px;left:14px;padding:10px 16px;background:var(--ink);color:#fff;border-radius:10px;font-size:14px;box-shadow:0 4px 16px #1c1b192e;pointer-events:none;max-width:calc(100% - 32px)}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#f6f5f2d9;color:var(--muted)}.overlay--error{color:var(--ink)}.dialog{width:min(520px,calc(100vw - 32px));padding:24px;border:1px solid var(--border);border-radius:12px;background:var(--surface);color:var(--ink);box-shadow:0 20px 60px #1c1b1933}.dialog::backdrop{background:#1c1b1959}.dialog h2{font-size:18px;font-weight:600;margin-bottom:8px}.dialog p{margin-bottom:12px;color:var(--muted);line-height:1.5}.dialog--about p{color:var(--ink)}@media (max-width: 760px){.app{grid-template-columns:minmax(0,1fr);grid-template-rows:56px auto minmax(0,1fr);grid-template-areas:"top" "board" "panel"}.topbar{padding:0 8px 0 16px}.brand__sub,.btn__label{display:none}.btn{padding:0 12px}.vsep{display:none}.boardwrap{border-bottom:1px solid var(--line)}.board{width:100%;height:auto;aspect-ratio:1 / 1}.boardtools{left:auto;right:10px;bottom:10px}.toggle span:last-child{display:none}.toggle{padding:0 8px}.zoomlabel{display:none}.panel{border-right:0;border-top:1px solid var(--line)}.sheet-handle{display:block;width:36px;height:4px;margin:8px auto 0;border-radius:2px;background:var(--border)}.panel__section{padding:12px 16px}.legendtoggle{cursor:pointer;height:44px}.legendtoggle__chev{display:block;transition:transform .15s}.panel__section--legend.is-open .legendtoggle__chev{transform:rotate(90deg)}.panel__section--legend:not(.is-open) .legend{display:none}.panel__section--footer{flex-wrap:wrap}}